Circuit board ultrasonic cleaning and testing accessories

Abstract

This utility model discloses an ultrasonic cleaning and testing accessory for circuit boards, belonging to the field of ultrasonic cleaning technology for circuit boards. The accessory places a testing foil between the upper and lower frames, allowing it to lie flat in the upper testing hole of the upper frame and the lower testing hole of the lower frame. After connecting the upper and lower frames together, the testing foil is fixed in place. Finally, the ultrasonic cleaning and testing accessory is placed in an ultrasonic cleaner for testing. The testing foil can be removed and placed after separating the upper and lower frames, making the installation and removal of the testing foil more convenient and preventing adhesive residue from falling off and remaining in the ultrasonic cleaner, thus avoiding adhesive contamination of the circuit boards being cleaned subsequently.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic cleaning technology for circuit boards, and in particular to an accessory for ultrasonic cleaning and testing circuit boards. Background Technology

[0002] Ultrasonic circuit board cleaning machines are industrial devices that achieve efficient cleaning through the ultrasonic cavitation effect. Their core components include an ultrasonic generator, transducer, and cleaning chamber. This equipment uses high-frequency oscillations to generate shock waves, causing contaminants adhering to the circuit board surface to detach from the substrate. Before cleaning the circuit board, the ultrasonic intensity needs to be adjusted. If the ultrasonic intensity is too low, the cleaning effect will be poor; if the ultrasonic intensity is too high, it will damage the components on the circuit board.

[0003] Currently, aluminum foil, typically 10 to 20 micrometers thick, is pasted onto the frame. The frame and foil are then placed in an ultrasonic cleaner, which uses ultrasonic waves to impact the foil. The ultrasonic strength is tested by observing whether evenly distributed perforations or dents appear on the foil. However, pasting the aluminum foil onto the frame is cumbersome, and the adhesive on the frame is prone to detaching during testing and remaining in the ultrasonic cleaner, potentially contaminating the circuit board during subsequent cleaning. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an ultrasonic cleaning and testing accessory for circuit boards. The accessory allows for the removal and placement of testing foil by separating the upper and lower frames, making the installation and removal of the testing foil more convenient and preventing adhesive residue from falling off and remaining in the ultrasonic cleaner, thus avoiding adhesive contamination of the circuit boards being cleaned subsequently.

[0005] The circuit board ultrasonic cleaning and testing accessory according to an embodiment of the present invention includes: The upper frame has a through-hole for detection. The bottom edge has a through-hole for detection. The upper frame and the lower frame are detachably connected in the vertical direction. The upper detection hole and the lower detection hole are opposite to each other. The upper frame and the lower frame are used to clamp the detection foil from the vertical direction. The detection foil is laid flat between the upper detection hole and the lower detection hole.

[0006] The circuit board ultrasonic cleaning and testing accessory according to the present invention has at least the following beneficial effects: the testing foil is placed between the upper and lower frame, so that the testing foil is laid flat in the upper testing hole of the upper frame and the lower testing hole of the lower frame. After the upper and lower frame are connected together, the testing foil is fixed. Finally, the circuit board ultrasonic cleaning and testing accessory is placed in the ultrasonic cleaning machine for testing. After the upper and lower frame are separated, the testing foil can be put in and taken out, making the installation and removal of the testing foil more convenient, and avoiding the adhesive used to stick the testing foil from falling off and remaining in the ultrasonic cleaning machine, thus avoiding adhesive contamination of the circuit board to be cleaned later.

[0007] According to some embodiments of the present invention, the top of the lower frame is provided with a groove, the shape of the groove matches the shape of the upper frame, and the upper frame is detachably disposed in the groove.

[0008] According to some embodiments of the present invention, the groove is provided on the side wall of the lower frame facing the lower detection hole, and the groove communicates with the lower detection hole.

[0009] According to some embodiments of the present invention, the outer edge of the upper frame is provided with a chamfer or rounded corner, and the edge of the groove is provided with a chamfer or rounded corner.

[0010] According to some embodiments of the present invention, the upper frame and the groove are fitted with a gap.

[0011] According to some embodiments of the present invention, the top surface of the upper frame is flush with the top surface of the lower frame.

[0012] According to some embodiments of the present invention, the detection foil separates the upper detection hole from the lower detection hole.

[0013] According to some embodiments of the present invention, the area of ​​the upper detection hole is equal to the area of ​​the lower detection hole.

[0014] According to some embodiments of this utility model, the upper frame and the lower frame are copper-clad laminates.

[0015] According to some embodiments of this utility model, the detection foil is aluminum foil or tin foil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a circuit board ultrasonic cleaning and testing accessory according to an embodiment of the present invention; Figure 2 This is an exploded view of an embodiment of the ultrasonic cleaning and testing accessory for circuit boards according to this utility model; Figure 3 This is a cross-sectional schematic diagram of a circuit board ultrasonic cleaning and testing accessory according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of an embodiment of the ultrasonic cleaning and testing accessory for circuit boards after disassembly.

[0017] Reference numerals: upper border 100, upper detection hole 110, lower border 200, lower detection hole 210, groove 220, detection foil 300. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be noted that terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0023] Ultrasonic circuit board cleaning machines are industrial devices that achieve efficient cleaning through the ultrasonic cavitation effect. Their core components include an ultrasonic generator, a transducer, and a cleaning tank. This equipment uses high-frequency oscillations to generate shock waves, causing contaminants adhering to the circuit board surface to detach from the substrate.

[0024] When using an ultrasonic cleaner to clean circuit boards, it is essential to ensure that the ultrasonic intensity is within the acceptable range. If the ultrasonic intensity is too high, the impact force generated by the ultrasound can damage the components on the circuit board; if the ultrasonic intensity is too low, the ultrasound will be insufficient to remove contaminants adhering to the circuit board. Therefore, it is necessary to adjust the ultrasonic intensity and perform testing after adjustment.

[0025] Currently, ultrasonic testing instruments are used to test the ultrasonic intensity in ultrasonic cleaners. However, these instruments are expensive and difficult to popularize. Furthermore, conventional probes for ultrasonic testing instruments have limitations; they cannot detect narrow spaces in ultrasonic cleaners or complex ultrasonic scenarios.

[0026] Therefore, to save costs, existing ultrasonic cleaners typically use an aluminum foil testing method. Aluminum foil is adhered to a frame, and the frame and foil are placed in the ultrasonic cleaner. The uniformity of the ultrasonic intensity distribution is judged by observing the distribution of perforations or indentations in the foil. However, during the testing process, the ultrasonic waves generated by the ultrasonic cleaner can easily cause the adhesive between the aluminum foil and the frame to detach. This detached adhesive remains in the ultrasonic cleaner, contaminating circuit boards that are subsequently cleaned and rendering them unusable.

[0027] Reference Figures 1 to 4 As shown, this utility model provides an ultrasonic cleaning and testing accessory for circuit boards.

[0028] The circuit board ultrasonic cleaning and testing accessory includes an upper frame 100 and a lower frame 200.

[0029] The upper frame 100 is a rectangular frame, and an upper detection hole 110 is provided in the middle of the upper frame 100 in the vertical direction. The upper detection hole 110 is rectangular. The lower frame 200 is a rectangular frame, and a lower detection hole 210 is provided in the middle of the lower frame 200 in the vertical direction. The lower detection hole 210 is rectangular, and the area of ​​the lower detection hole 210 is equal to the area of ​​the upper detection hole 110.

[0030] Both the upper frame 100 and the lower frame 200 are copper-clad laminates. The upper frame 100 and the lower frame 200 can be made from the substrate material used in the circuit board manufacturing process, or they can be made from the waste frame generated after the circuit board is routerd, after grinding or polishing, to avoid the burrs or rough surface of the waste frame scratching the detection foil 300.

[0031] A groove 220 is provided at the top of the lower frame 200. The groove 220 surrounds the lower frame 200 in a rectangular shape. The groove 220 is located on the side wall of the lower frame 200 facing the lower detection hole 210. The groove 220 is in communication with the lower detection hole 210. The groove 220 makes the lower detection hole 210 a stepped hole that is larger at the top and smaller at the bottom.

[0032] The shape of the groove 220 matches the shape of the upper frame 100. The upper frame 100 can be embedded in the groove 220. The upper frame 100 and the groove 220 are fitted with a gap so that the upper frame 100 can be installed in the groove 220 or removed from the groove 220, and it helps to clamp the detection foil 300 between the groove 220 and the upper frame 100.

[0033] When the upper frame 100 is installed into the groove 220, the top surface of the upper frame 100 is flush with the top surface of the lower frame 200 so that the upper frame 100 and the lower frame 200 form a compact whole.

[0034] The testing foil 300 can be made of aluminum foil or tin foil. The upper frame 100 is removed from the groove 220 of the lower frame 200. The testing foil 300 is placed in the lower testing hole 210 of the lower frame 200, with the outer edge of the testing foil 300 placed in the groove 220. The upper frame 100 is then inserted into the groove 220 of the lower frame 200. The upper frame 100 and the lower frame 200 clamp the testing foil 300 from the top and bottom respectively, so that the testing foil 300 can be laid between the upper testing hole 110 of the upper frame 100 and the lower testing hole 210 of the lower frame 200, thus separating the upper testing hole 110 and the lower testing hole 210 by the testing foil 300. Finally, the circuit board ultrasonic cleaning testing accessory is placed in an ultrasonic cleaning machine for testing.

[0035] After separating the upper frame 100 and the lower frame 200, the test foil 300 can be placed and removed, making the installation and removal of the test foil 300 more convenient, and avoiding the adhesive used to stick the test foil 300 falling off and remaining in the ultrasonic cleaner, thus avoiding adhesive contamination of the circuit board to be cleaned later.

[0036] In some embodiments, the upper frame 100 and the lower frame 200 can be detachably connected in several ways. For example, the upper frame 100 and the lower frame 200 can be connected by screws, so that the detection foil 300 is securely fixed between the upper frame 100 and the lower frame 200; or a buckle is provided at the bottom of the upper frame 100 and a fastener is provided at the top of the lower frame 200, and the buckle of the upper frame 100 and the fastener of the lower frame 200 can be detachably engaged, ensuring that the upper frame 100 and the lower frame 200 are securely connected and easy to disassemble and install; or, a first magnet is provided at the bottom of the upper frame 100 and a second magnet is provided at the top of the lower frame 200, and the first magnet and the second magnet are magnetically engaged, which facilitates disassembly and installation.

[0037] In some embodiments, the outer edge of the upper frame 100 is chamfered or rounded, and the edge of the groove 220 is chamfered or rounded to prevent the outer edge of the upper frame 100 or the edge of the groove 220 from scratching the detection foil 300.

[0038] In some embodiments, the groove 220 at the top of the lower frame 200 is not connected to the lower detection hole 210, while the area of ​​the upper detection hole 110 of the upper frame 100 is larger than the area of ​​the lower detection hole 210. The upper frame 100 is installed in the groove 220, and the detection foil 300 is pressed between the upper frame 100 and the groove 220, so that the detection foil 300 forms multiple bends from the groove 220 to the lower detection hole 210, so as to fix the detection foil 300.

[0039] This utility model's ultrasonic cleaning and testing accessory for circuit boards has the following advantages: Repeatability: It can be used repeatedly. Non-limiting: It is applicable to equipment with ultrasonic testing capabilities, such as: circuit pretreatment, surface treatment, solder resist pretreatment, immersion tin lines, horizontal copper plating, immersion gold post-treatment lines, immersion gold pre-treatment lines, etc. Flexibility: The upper frame 100 and lower frame 200 are simple to manufacture without special materials or processes; their size can be customized according to the requirements of the ultrasonic cleaning machine. Contamination prevention: The upper frame 100 and lower frame 200 can reinforce the testing foil 300 without adhesive tape, preventing contamination of the ultrasonic cleaning machine and avoiding adhesive contamination of the circuit board during cleaning. Low cost and ease of use: It can be manufactured using existing circuit board substrate materials, is easy to produce, and can be implemented at a very low cost. It is reusable and applicable to different processes.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An ultrasonic cleaning and testing accessory for circuit boards, characterized in that, include: The upper frame has a through-hole for detection. The bottom edge has a through-hole for detection. The upper frame and the lower frame are detachably connected in the vertical direction. The upper detection hole and the lower detection hole are opposite to each other. The upper frame and the lower frame are used to clamp the detection foil from the vertical direction. The detection foil is laid flat between the upper detection hole and the lower detection hole.

2. The circuit board ultrasonic cleaning and testing accessory according to claim 1, characterized in that, The bottom frame has a groove at its top, the shape of which matches the shape of the top frame, and the top frame is detachably disposed in the groove.

3. The circuit board ultrasonic cleaning and testing accessory according to claim 2, characterized in that, The groove is located on the side wall of the lower frame facing the lower detection hole, and the groove communicates with the lower detection hole.

4. The circuit board ultrasonic cleaning and testing accessory according to claim 3, characterized in that, The outer edge of the upper frame is chamfered or rounded, and the edge of the groove is chamfered or rounded.

5. The circuit board ultrasonic cleaning and testing accessory according to claim 2, characterized in that, The upper frame fits into the groove with a clearance.

6. The circuit board ultrasonic cleaning and testing accessory according to claim 2, characterized in that, The top surface of the upper frame is flush with the top surface of the lower frame.

7. The circuit board ultrasonic cleaning and testing accessory according to claim 1, characterized in that, The detection foil separates the upper detection hole from the lower detection hole.

8. The circuit board ultrasonic cleaning and testing accessory according to claim 1, characterized in that, The area of ​​the upper detection hole is equal to the area of ​​the lower detection hole.

9. The circuit board ultrasonic cleaning and testing accessory according to claim 1, characterized in that, The upper frame and the lower frame are copper-clad laminates.

10. The circuit board ultrasonic cleaning and testing accessory according to claim 1, characterized in that, The detection foil is aluminum foil or tin foil.

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